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Figure 4-2 illustrates the 2007 pregniant liquor results and Figure 4-3 represents monthly <br />production for 2007. Production and processing were perfonned for twelve months of the year. <br />Good brine grade and temperatures were noted throughout the year. The balance between <br />injection and recovery rates for cavities 1 A, 5H, and 6H has been continuously monitored using <br />fluid level indicators (pressure transmitters) installed in existing Dissolution Surface aquifer <br />monitoring wells located near the active cavities. <br />Figure 4-2 <br /> 2007 Pregnant Assays & Production <br /> <br /> <br />O 31SO 85 <br /> 325 <br />2 75 <br />0 <br /> 275 <br />65 <br /> 250 <br /> 225 55 O <br />$ 200 <br />0 <br />its <br /> <br />as <br /> <br />O <br />o <br />v , <br />- - -- <br />r - <br />- rn <br /> • `Y 35 <br /> <br /> 100 -? <br />r + i i 1 r r ?- 25 <br /> Q <br />3 7 5 ? ? ? $ i O <br /> <br />Figure 4-3 <br /> W "P, -'''' ?` 1"', ''" Natural Soda Production <br /> 00; 105000 <br /> 95.000 <br /> 10 000 <br /> 85.000 <br />c <br />0 <br />c 9 <br />000 ; 5.000 0 <br />o , ~ <br /> 65,000 c <br />$ 8,000 55.000 <br /> <br /> 45,000 a <br /> 000 m 3 <br />00 d <br /> p 5, <br />0 r <br /> ON 25,000 <br /> 15.000 <br /> 5,000 - 5,000 <br /> ' 4 4 4 ? ? d q & 4 <br />The fluid level data is used to adjust the injection/recovery flow rates as necessary to maintain <br />the Dissolution Surface aquifer potentiometric level at pre-mining historical levels. <br />7